void SqareDown()
{
	int i,j;
	for(i=19;i>=0;i--)
	{
		for(j=0;j<10;j++)
		{
			if(g_arrBackGround[i][j]==1)
			{
				g_arrBackGround[i+1][j]=g_arrBackGround[i][j];
				g_arrBackGround[i][j]=0;
			}
		}
	}
	

}
void SqareLeft()
{
	int i,j;
	for(i=19;i>=0;i--)
	{
		for(j=0;j<10;j++)
		{
			if (g_arrBackGround[i][j]==1)
			{
				g_arrBackGround[i][j-1]=g_arrBackGround[i][j];
				g_arrBackGround[i][j]=0;
			}
		}
	}
}
void SqareRight()
{
	int i,j;
	for(i=19;i>=0;i--)
	{
		for(j=9;j>=0;j--)
		{
			if (g_arrBackGround[i][j]==1)
			{
				g_arrBackGround[i][j+1]=g_arrBackGround[i][j];
				g_arrBackGround[i][j]=0;
			}
		}
	}
}
